Imported Upstream version 60upstream/60

1 files changed, 61 insertions, 0 deletions

diff --git a/test/interface/embed.go b/test/interface/embed.go
new file mode 100644
index 000000000..2fddee190
--- /dev/null
+++ b/test/interface/embed.go
@@ -0,0 +1,61 @@
+// $G $D/$F.go && $L $F.$A && ./$A.out
+
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Check methods derived from embedded interface values.
+
+package main
+
+import "os"
+
+const Value = 1e12
+
+type Inter interface { M() int64 }
+
+type T int64
+func (t T) M() int64 { return int64(t) }
+var t = T(Value)
+var pt = &t
+var ti Inter = t
+
+type S struct { Inter }
+var s = S{ ti }
+var ps = &s
+
+var i Inter
+
+var ok = true
+
+func check(s string, v int64) {
+	if v != Value {
+		println(s, v)
+		ok = false
+	}
+}
+
+func main() {
+	check("t.M()", t.M())
+	check("pt.M()", pt.M())
+	check("ti.M()", ti.M())
+	check("s.M()", s.M())
+	check("ps.M()", ps.M())
+
+	i = t
+	check("i = t; i.M()", i.M())
+
+	i = pt
+	check("i = pt; i.M()", i.M())
+
+	i = s
+	check("i = s; i.M()", i.M())
+
+	i = ps
+	check("i = ps; i.M()", i.M())
+
+	if !ok {
+		println("BUG: interface10")
+		os.Exit(1)
+	}
+}